Whoops, forgive my mistake/sloppiness. When I was referring to the 8400 I was thinking of the E8400 C2D not the Q4D--this processor seems to be the value gamers part of choice up til the Phenom 2's arrived.
As for the 2.66 Quad, you're obviously never gonna reach the OC of the 3.16 for those games that rely purely on clock speed. I'd call it a toss-up as to what is the better CPU depending on your usage characteristics. If you already have the 8500 I wouldn't bother upgrading for another year or two when there's a more compelling argument to add more cores. As it is, it seems the software hasn't caught up to the hardware capabitilies (CPU-wise) if you ask me. Save your cash for more RAM or a higher end GPU.
